>> that whole thing about paralympics, it's not about oh, they're triers. give them a go. we're professional, elite sportswomen. and we don't need any favors. >> reporter: you're unbelievably fast. >> yeah, yeah, i am fast. >> reporter: another strength? her perspective. >> you might go through the most darkest days of your life, the most traumatic days, but, you know, you can get positive things from it and you can achieve dreams that you never, ever dreamed of. >> nbc's dr. nancy snyderman reporting there. one last note on that. martine wilkshire wears the number 7 on her uniform and says it makes that date a positive in her life. that is our broadcast for this monday night labor day. thank you for being with us. i'm kate snow. brian williams will see you tomorrow evening from the democratic national convention in charlotte, north carolina.